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-   -   pic: Versa Robot (http://www.chiefdelphi.com/forums/showthread.php?t=123172)

smistthegreat 14-12-2013 19:45
pic: Versa Robot
 

Whippet 14-12-2013 19:46
Re: pic: Versa Robot
 
This is a really cool robot given three days with the CAD files for the parts! How did you intend to balance the arm?

yash101 14-12-2013 19:54
Re: pic: Versa Robot
 
Now I see how awesome the Vex Versa* stuff can be! Wildcard means anything with the name beginning with Versa

DampRobot 14-12-2013 19:57
Re: pic: Versa Robot
 
Why did you choose to go double jointed, especially where both are powered by motors? A single jointed arm would be just as effective, and a double jointed arm would likely be prohibitively hard to control.

smistthegreat 14-12-2013 20:01
Re: pic: Versa Robot
 
Quote:
Originally Posted by DampRobot (Post 1312633)
Why did you choose to go double jointed, especially where both are powered by motors? A single jointed arm would be just as effective, and a double jointed arm would likely be prohibitively hard to control.
Since this won't be built, I'm not terribly concerned with controlling it. The main decision to make another joint was just for the sake of added mechanical complexity. Would I build this over something simpler for a game like Logomotion? Probably not. Was it a good CAD exercise for me and did it show the versatility (ha) of the VexPro products? Yeah, I'd say so.

Chris is me 14-12-2013 20:03
Re: pic: Versa Robot
 
Quote:
Originally Posted by DampRobot (Post 1312633)
Why did you choose to go double jointed, especially where both are powered by motors? A single jointed arm would be just as effective, and a double jointed arm would likely be prohibitively hard to control.
Tell that to 2056, 217, 11, 973, 1730, or any other number of successful teams in 2011 alone who did just that.

Also consider that this is a generic arm for no particular game. There's no guarantee that the best angle to score a game piece at will line up perfectly with the angle a single joint arm provides. I love single jointed arms but you can't say single jointed arms are always "just as effective" regardless of the game.

smistthegreat 14-12-2013 20:04
Re: pic: Versa Robot
 
Quote:
Originally Posted by Whippet (Post 1312621)
This is a really cool robot given three days with the CAD files for the parts! How did you intend to balance the arm?
Again, since this won't get built, I wasn't as concerned about how it would perform as I was with how easy it is to use the VexPro products. That being said, it should be fairly easy to either throw a couple of gas shocks going from the arm to the supports, or just extend then main arm back farther and have some surgical tubing pulling down on the other side of the shoulder joint.

Scoyle 14-12-2013 20:07
Re: pic: Versa Robot
 
Can you give an estimated price or supply list. This is something that I have been the most curious about because it is hard to image a price point of a robot without superstructures and a relatively new set of parts.

yash101 14-12-2013 20:07
Re: pic: Versa Robot
 
Is this for logomotion? That seems like a possibility!

smistthegreat 14-12-2013 20:11
Re: pic: Versa Robot
 
Quote:
Originally Posted by smistthegreat (Post 1312619)
It's not really designed with a specific year in mind
No, it wasn't designed for Logomotion, but it was certainly inspired by lifting games like it. Again, this was meant to examine how easy it would be to build a reasonably complicated robot with only COTS parts from VexPro.

IndySam 15-12-2013 08:06
Re: pic: Versa Robot
 
fun exercise (eh procrastination) well done.


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